Physics
Grade-9
Easy
Question
The boiling point of helium is 4.22 K. Its state at – 272o Celsius is ___.
- Solid
- Liquid
- Gas
- None
Hint:
Above boiling point a substance can change from liquid to gas.
The correct answer is: Liquid
- converting -272 celcius into kelvin ; -272 + 273 = 1 kelvin
- So temperature of helium is less than its boiling point
- Hence helium will be in Liquid state
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